Motorcoach Industry Hours of Service and Fatigue Management Techniques (2005) / Chapter Skim
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Pages 7-9
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From page 7... ...
Rather, it is the combination of long work periods and other non-duty factors that contribute to on-the-job fatigue, by limiting the available time for recreation, rest, and sleep. Over extended working periods, repeated inadequate sleep periods can result in accumulated sleep debt and associated operator fatigue.
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From page 8... ...
It has been shown that both the number and timing of disruptions can adversely affect daytime alertness. Some general factors that disrupt sleep in commercial transportation operations include • Noise, vibration, movement, uncomfortable temperature, and poor air quality in sleeping quarters; • Unfamiliar environments away from home with less than optimal conditions; and • Attempting to sleep at an inappropriate time for one's circadian rhythm.
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From page 9... ...
Acoustical Noise Operators are exposed to engine noises in all transportation vehicles, as well as related noises emanating from controls, transmissions, braking systems, and wind streams. Some of these noises present more of a hearing-conservation issue than a driver fatigue issue.
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